United States · 1991–2020 normal

Waterloo in
May.

Typical May weather in Waterloo: 23°C by day, 11.2°C at night, 139 mm of rain over 10.4 wet days. These are measured 1991–2020 station normals, not a forecast.

Typical high23°C
Typical low11.2°C
Rain139 mm
Wet days10.4

Comfort score 69 this month (September leads the year at 82). Daylight is calculated as 14 h 20 from latitude 39.56°.

The evidence behind this page

One month,
from the same station.

Place identity
GeoNames 4266643
NOAA station
USC00123091 · FRANKLIN WWTP
Station distance
17 km from the place centre
Coverage
Good coverage · 16 usable years
Important limit
Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.